Perry and Crawford both participated in last year's broadcast, held at Hollywood's Paramount Studios. Perry performed her summer smash "I Kissed a Girl," while the actor presented the Moonman trophy for Best New Artist, along with Lauren Conrad, to rockers Tokio Hotel.

Crawford, Perry and Ne-Yo join previously announced talentTaylor Swift, who will perform a never-before-heard version of "You Belong With Me," and Russell Brand, who is hosting the show for the second year in a row.

MTV will air the 2009 Video Music Awards live from Radio City Music Hall on Sept. 13.

Trending

Ranked on a scale from 1 to 10, the trending score reflects the number of users reading a story in real time.